RU94011397A - Method for protection against un-authorized access to guarded rooms and security device for this method - Google Patents

Abstract

FIELD: security devices. SUBSTANCE: method involves pulse electric influence of intruder's body when it contacts electric element in guarded room. This is achieved by charging human's body using single-wire circuit and high-voltage pulses which have at least two alternating half-waves. Intruder is influence without his direct contact with ground or grounded current conducting members. Corresponding security device has primary power supply 1 (mains), to which electric-loaded current-conducting non-grounded members of guarded room are connected through high-voltage transformer which conductance steeps down fast. Windings of high-voltage transformer are connected in series aiding. Beginning of primary winding is connected to first output pole 4 of current pulse generator 5. Point of connection between end of primary winding and beginning of secondary winding is connected to second output pole 10 of current pulse generator 5. Line of generator 5 from output terminal 10 to input terminal 9 contains serial circuit having controlled gate 6, diode 11 and charging resistor 12. Point of connection between gate and diode is connected to another line of generator 5 through non-pole capacitor 7. Cathode of electronic timer 15 is connected to connection point of diode 11 and charging resistor 12 with line, anode of electronic timer is connected to another line, which controls control terminal of gate 6. Device starts its operation by alarm system 18 through controlled switch 17. EFFECT: increased functional capabilities. 12 cl, 6 dwg

Claims (1)

The invention relates to methods for preventing unauthorized entry into / at a guarded object and security devices. The inventive method consists in a pulsed electrical effect on the body of an attacker when trying to contact him with an electrified element of the object by recharging the capacity of the human body in a single-wire circuit with high-voltage pulses containing at least two alternating half-waves, the effect being provided in the absence of direct contact of the attacker with the ground and / or grounded conductive elements. The security device contains a primary power source 1 (mains), to which, through a high-voltage transformer 2 with a steeply falling external characteristic, electrified non-grounded conductive elements of the object (metal or having a conductive coating) are connected, contact with which is inevitable when trying to penetrate the object. The windings of the high-voltage transformer are connected in series according to, the beginning of the primary winding is connected to the first output pole 4 of the pulse generator 5, the electrical connection point of the end of the primary and the beginning of the secondary windings of the transformer is connected to the second output pole 10 of the pulse generator 5, in one bus of which is connected in series from the output terminal 10 to the input terminal 9 is included in the conductive direction of the controlled key 6, the diode 11 and the charging resistor 12. The connection point of the key and the diode is electrically connected through a capacitor 7 with another bus of the generator 5. The electronic timing device 15 is connected by the cathode to the junction point of the diode 11 and the charging resistor 12 to one bus, the anode to the other bus, the control terminal to the control terminal of the key 6. The device is activated by alarm 18 through a controlled contactor 17. 2 s. P. f-ly, 6 ill.